Control apparatus



1931- N. K. ANDERSEN I, 1,817,431

CONTROL APPARATUS Filed April 16, 1927 WITNESSES Z INVENTOR NZEZS K. Andersen.

Patented Aug. 4, 1931 UNITED STATES PATENT OFFICE NIELS K. ANDERSEN, OF FOREST HILLS, PENNSYLVANIA, ASSIGNOR TO WESTING- HOUSE ELECTRIC & MANUFACTURING COMPANY, A CORPORATION OF PENNSYL- VANIA CONTROL APPARATUS Application filed April 16,

My invention relates to electromagnetic devices and more particularly to those devices wherein movable armatures are actuated.

An object of my invention, generally stated, is to provide for maintaining an actuating coil of an electromagnetic device energized until the current in the coil has reached a substantially constant value.

A more specific object of my invention is to provide for actuating the armature of a circuit interrupter or similar device and for maintaining the exciting circuit for a period of time.

Other objects of the invention will become apparent when the description is considered in connection with the accompanying drawing, in which;

The single figure is a diagrammatic view illustrating an embodiment of my invention.

Referring now to the drawing, an electromagnetic circuit interrupter is illustrated,

which comprises an actuating coil 1, a secondary coil 5, a movable armature 2, and an auxiliary contactor 3.

The coil 1 for actuating the armature 2 of the circuit interrupter may be mounted in any suitable manner and in this instance it is disposed in the frame 4. A secondary winding 5 is mounted on the actuating coil 1. In view of the close proximity of the coils 1 and 5 when the coil 1 is energized, the coil 5 will be energized by induction. The movable armature 2 which may be utilized for actuating any member, such for example, as the contact member 6 is disposed to reciprocate within the actuating coil 1 and secondary coil 5.

A spring 2a is mounted in the bottom of the frame A to bias the armature 2 to its upper position. Therefore, when the coil 1 is deenergized, the armature 2 is raised to actuate the contact member 6.

In this embodiment of the invention a latch 7 is provided for locking the armature 1927. Serial No. 184,232.

the groove 30 on the armature 2 when the latter is in its lower position.

An auxiliary contactor, shown generally at 3 and which may be employed for controlling the circuit utilized in energizing the exciting coil 1 of the interrupter 2, comprises a base member 9, a pair of coils 12 and 13, a stationary contact member 14: and a movable contact member 15.

The movable contact member 15 of the auxiliary contactor 3 may be secured in any suitable manner and in this particular embodiment, it is pivotally mounted by means of the pin 16 on the support 17 which is fixed to the base 9. A spring 18 or some similar resilient means may be utilized to bias the contact member 15 to its open position. The stationary contact member 14: is secured to the base 9 and disposed to receive the movable contact member 15.

The movable contact member 15 also functions as an armature and is actuated by the coil 12 which is mounted on the base 9 of the contactor. As illustrated, a second coil 13 for maintaining the contactor 3 closed is associated with the coil 12.

A battery 19 may be provided as a source of supply of current for the control circuit. The actuating coil 12 of the auxiliary contactor is connected in circuit relation with the battery 19. The energizing circuit for the coil 12 may be traced from the battery 19 through the manually operated push button switch 22, conductor 23, the actuating coil 12, conductor 24, the circuit interrupting device 25 mounted on the frame 4 of the interrupter, and conductor 28 to the negative side of the battery 19.

The circuit interrupting device, as illustrated, comprises a stationary contact member 26 and a movable contact member 27 pivotally mounted on the frame 4 and provided with a horizontally extending projection. In order to operate the circuit breaking device 25, an element 20 is mounted on the armature 2 in alinement with the projection on the movable contact member 27. Therefore, when the armature 2 is actuated to its lower position to close the switch 6, the element 20 will operate the contact member 27 onda'y coil associated therewith, and an armature actuated by said actuating coil, a source of currei'it, an auxiliary contactor for controlling the flow of curent to th actor ting coil, said auxiliary contactor having two associated therewith, means for connecting I e of said coils to said source of Sn )ply, actu: ed by said actuating coil for (usconnectingg said coir from said or current induced in sale secondary coil for .aaintaining said conta tor in circuit making position intil the current in the actuating coil ha: reached a substantial y constant value.

A circuit controller comprising' an elect -oinagnet having an actuating coil, and an 1 "I 1' b seconcary con, a s urce or current and an auxiliary contactor for controlling the how coil, said auxiliary contactor having a plurality of coils therefor, one of said coils being energized rolling the circuit to said first-mentioned :uixiliary contactor C01l, lurther means for the arnn at other of said co ls on the .y con ctor being enerondary coil, aro nechanical means on the controller for 1 ring said armature in a oe u'ed position, and n l armature.

armature actuated by the ac* in coil, a

of current to the actuating om the source, manual means for coninterrupiiing the circuit to said coil when etuatedy lulu gnzed by th current induced in said sec- -ocl cans for releasing (S. A circuit controller comprising, an electron ago hav w an "charting coil, a secondary arniz'iture actuated by the actu C source current, and an auxu UC'LCl' for owl/rolling How of d curr-nt to the act, coil, said aux contactor having plurality oi coils we one of coi relation i s being in i na y contactor being 1 1 J. to th curl tilt r J. COllStfL c; it relat o :uixlliary contactor and operator, arlnati re for nit-crruptlng the circuit exciting coil when said armature actuated, means for locking the armature, andmagnetic means manually controlled for releasing said, armature, and at the same time interrupt n COL the circuit from the secondary i o the auxiliary contact-or coil which 1s L to 1 ti on therewith.

.1 Jahle armature, means for aca "1 ire, a sour e current, t or connecting the actuating cir nit rela ion with said source,

being normally said open, a manually-operable switch, a plurality of coils associated with said contactor means, one of said oils arranged to be connectec to the source by said switch, ind means including another of said coils res, onsive to the current flowing in the actuating cans for maintaining said actuatin circuit relation with said time.

or limited 8. A cntroller comprising an elechaving an exciting coil and a ndary coil of the electro- 4 aiiiii the exciting coil enod of time after the operaitrre. electro-iragnetic device comprising xciting coil, a secondary coil, and L n arture disposes to be actuated by said exceil, a source of supply, magneticallyoperated n e! for connecting said exciting coil to as source, raid magnetically-operated means comprising a plurality of coils, one of said coils arranged to be energized from source, manual. n'ieanTs for controlcirci'iit to said first-mentioned coil, for interru ting the circuit to said ari'nature is actuated, and

"r of said coils assoinagnetically-operatcd in incluu with 1 '-/1'\ I Yr; L x M 1 P 1 P um ics onsiv-v LO Qlli rent liiCdlCcu are. secondary coil for maintaining the con- 1 c for said contact-or, an energizing circuit for the closing 0011 including said source and a control switch, said closing coil n an oiectro-inagnetic device, in combeing energized upon closure of said switch, and means associated with said contactor and responsive to current induced in said secondary coil for maintaining the exciting oil energized for a period of time after the operation of said armature.

In testimony whereof, I have hereunto subscribed my name this 8th day of April,

NIELS K. ANDERSEN. 

